test_lazy_imports.py

importsys
from . importversion_skip


@version_skip
deftest_lazy_imports():

# plotly not imported yet
assert"plotly"notinsys.modules

# Import top-level plotly module
importplotly

assert"plotly"insys.modules

# Check that submodules are not auto-imported, but can be be accessed using
# attribute syntax
submodules= ["graph_objs", "io"]
forminsubmodules:
module_str="plotly."+m
assertmodule_strnotinsys.modules

getattr(plotly, m)
assertmodule_strinsys.modules

# Check that constructing and serializing empty figure doesn't auto-import
# nested graph objects
plotly.graph_objects.Figure().to_json()
submodules= [("layout", "title"), ("scatter", "marker"), ("scattergl", "marker")]
formodule_partsinsubmodules:
module_str="plotly.graph_objs."+".".join(module_parts)
assertmodule_strnotinsys.modules

# Use getattr to
module=plotly.graph_objects
forminmodule_parts:
module=getattr(module, m)

assertmodule_strinsys.modules